CN2303112Y - Device for fixing bearing of heat radiation fan - Google Patents

Abstract

The utility model relates to a device for fixing a bearing of a heat radiation fan. A shaft pipe of a frame base is provided with a plurality of open slots, which leads the shaft pipe to form a plurality of blades. An upper convex block or a lower convex block can be arranged in each blade. The convex blocks in the adjacent blades are orderly arranged from top to bottom. The distance between the upper convex block and the lower convex block is the same as the thickness of a bearing, which leads the bearing to be clamped by the blades and be limited between the upper convex block and the lower convex block.

Description

The bearing fixing device of radiation fan

The utility model relates to a kind of bearing fixing device of radiation fan.

Existing radiation fan is provided with central siphon in the framework of ccontaining fan, and the poor design in the footpath that utilizes central siphon, bearing is embedded in the central siphon with the packing combination, and just the central shaft of impeller (rotor) penetrates bearing, and the central shaft terminal of impeller is provided with a circular groove, for fastener components buckles such as C shape clasps, so, impeller is articulated in by activity on the central siphon of radiation fan and becomes position rotating, and this bearing has two types design, a kind of is single bearing, announce " improvement of cooling fan self-lubricating bearing " patent case the 23569 No. six as Taiwan, it is to make single bearing that good location can be arranged, and adopts the bearing of the full whole shaft tube inner wall of embedding, articulate to support that central shaft is movable, have the problem of assembling inconvenience, and increase the surface of contact of central shaft and bearing simultaneously, surface of contact is bigger, wearing and tearing are also bigger, therefore the working life of reducing fan; Another kind is a duplex bearing, announce No. eight or eight, the two or eight the Seventh Five-Year Plan " integrated radiating fan case seat axle sleeve " patent case as Taiwan, it embeds upper and lower bearing in the packing of central siphon upper and lower end, can reduce area of contact with central siphon intermediate portion wall, but the bearing that embeds is if having slightly deviation or the packing combination degree differs, the center line of corresponding center line of then upper and lower two bearings and impeller central shaft has offset problem, promptly can't guarantee fan center's axle in a fixedly straight line rotation, and easily produce noise.

The purpose of this utility model is to provide a kind of bearing fixing device of radiation fan, the central siphon of this radiation fan and the area of contact of bearing, bearing and impeller central shaft are reduced, with ease of assembly, solve the deflection problem that duplex bearing produces, and can reduce production costs.

Another purpose of the present utility model is to provide a kind of bearing fixing device of radiation fan, does not need to fix by the packing combination for single bearing, to increase the working life of bearing.

The purpose of this utility model is to realize like this, a kind of bearing fixing device of radiation fan promptly is provided, on the central siphon of skeleton frame, establish several opening slots, described central siphon forms several limbs, be provided with upper protruding block or lower protruding block in each limb, projection in the adjacent limb becomes upper and lower order to arrange, and the distance between the upper and lower projection is identical with the thickness of bearing, and described bearing is inserted described limb internal beam folder and is limited between the upper and lower projection.

The advantage of the utility model device is, processing, easily manufactured, and assembling is convenient, firm, and cost is low, does not have the wear problem of rotor rotation.

Below in conjunction with accompanying drawing, embodiment of the present utility model is described, wherein:

Fig. 1 is an exploded perspective view of the present utility model;

Fig. 2 is an I partial enlarged drawing among Fig. 1;

Fig. 3 is a combination top view of the present utility model;

Fig. 4 is a 4-4 line sectional drawing among Fig. 3.

See also Fig. 1, a preferred embodiment of the present utility model shown in 2, its central siphon 2 by skeleton frame 1 is established several opening slots 21, make this central siphon 2 form several limbs 22, limb 22 can be odd number or even number, usually comparatively suitable with four in the even number or six, internal diameter at limb 22 can be established upper protruding block 23, lower protruding block 24, for making things convenient for offering of mould, each limb 22 can only be formed with upper protruding block 23 or lower protruding block 24, and make adjacent limb 22 form a upper protruding block 23, being crisscross arranged of one lower protruding block 24, when limb 22 is the even number sheet, it just can form, down, on, under setting, when limb 22 is the odd number sheet, wherein have two adjacent limbs can form the situation that is all upper protruding block 23 or lower protruding block 24, for the effect did not influence of this design, upper protruding block 23 is identical with the thickness of bearing 3 with distance between the lower protruding block 24, bearing 3 is limited in therebetween, and this bearing 3 can be various ball bearings, the copper bearing, oil-impregnated bearing etc.

See also combination situations of the present utility model shown in Fig. 3,4, this bearing 3 can utilize opening of limb 22 to close elasticity and insert between upper protruding block 23 and lower protruding block 24, limited by upper and lower projection 23,24, and it is fixing by limb 22 tight bundles, in case of necessity, the surface of contact of limb 22 and bearing 3 can be fixed with stalemate agent etc., or establish contractile tightening piece by limb 22 external diameters and restrainted folder, make 22 one-tenth of bearing 3 external diameters and limbs immovable fixing, so available single bearing 3 is supported the centre of rotor axles, make rotor can be firmly, rotate smoothly.

The utility model processing, easily manufactured, and it is also very convenient during the bearing assembling, after packing into, this bearing promptly forms upper and lower location, do not have the problem of coming off, when the rotor rotation that bearing is supported, do not have the wear problem that causes by deviation, and number of bearings can be reduced, thereby reduce production costs.

Claims (4)

1. the bearing fixing device of a radiation fan, it is characterized in that, on the central siphon of skeleton frame, establish several opening slots, described central siphon forms several limbs, be provided with upper protruding block or lower protruding block in each limb, projection in the adjacent limb becomes upper and lower order to arrange, and the distance between the upper and lower projection is identical with the thickness of bearing, and described bearing is inserted described limb internal beam folder and is limited between the upper and lower projection.

2. according to the bearing fixing device of the described radiation fan of claim 1, it is characterized in that described limb is four or six.

3. according to the bearing fixing device of the described radiation fan of claim 1, it is characterized in that the surface of contact of described limb and described bearing is bonding by stalemate agent.

4. according to the bearing fixing device of the described radiation fan of claim 1, it is characterized in that, but the external diameter of described limb is tightened the tightening piece of undergauge.

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